I'm on RTM win 10 pro on my Dell 7720 laptop. Have 2 queries:

1). I've changed the font size to 150% which is fine on the desktop. But I need only the lock screen/Welcome screen to be 100% font size since on 150 % the font is too big and ugly. So is there any way to change only the lock/welcome screen to 100% font size again?

2). I'm experiencing fuzzy/blurry font and icons for some of the applications. For example: Dell touchpad circular scrolling icon is fuzzy, while on 8.1 it was fine. Even the text in Device manager is fuzzy, while on the properties window of this PC it is fine. See below:-

Click image for larger version. 

Name:	ERvh5er.jpg 
Views:	52 
Size:	220.7 KB 
ID:	24886

Click image for larger version. 

Name:	zvBSYYT.jpg 
Views:	24 
Size:	299.5 KB 
ID:	24887

Please help.